We've got an LG Nexus system dump and endless desire to spoil every Googley surprise we can. Today's edition of the Android 4.2 Teardown could be alternatively subtitled "The Super-Serious Security Edition," because we're talking about the sort of stuff that should make your sysadmin jump for joy.

Please keep in mind this is just as forward-facing and time-ambiguous as all my other teardowns. This is a list of new stuff in the 4.2 dump, not a list of "confirmed for 4.2" features.

Welcome to the continuation of our Android 4.2 extravaganza. If you haven't guessed by now, we don't just have an unreleased version of Gmail; we have an entire LG Nexus system dump. Some LG Nexus prototypes are supposedly running 4.1.2, but the build we have is something different - something newer.It's an in-progress 4.2 build. Most apps in this build identify themselves as version "4.2-[###]" or "JellyBeanMR1" (4.1.2 is JellyBeanMR0).